HUBBLE SPACE TELESCOPE
DAILY REPORT #2192
PERIOD COVERED: 0000Z (UTC) 08/20/98 - 0000Z (UTC) 08/21/98
Daily Status Report as of 233/0000Z
1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:
1.1 Completed Two Sets of NIC/2 7233 (Dust Disks Around Main Sequence Stars)
The Near Infrared Camera (Camera Two) was used to make observations
of the dust disk around main sequence stars. The observations were made
with the coronagraph to minimize the effects of glare from the bright
central star. A dark calibration image was also taken. The observations
were completed as scheduled, and no anomalies were reported.
1.2 Completed Two Sets of WF/PC-2 7712 (WF/PC-2 Cycle 7 Supplemental
Darks pt2/3)
The WF/PC-2 was used to make a series of Cycle 7 supplemental
calibration darks. This dark calibration program obtains three dark frames
every day to provide data for monitoring and characterizing the evolution
of hot pixels. The observations were executed as scheduled, and no
anomalies were noted.
1.3 Completed Three Sets of NIC/2/3 7907 (NICMOS Pure Parallel Winter 97-98)
The Near Infrared Camera (Cameras Two and Three) was used to make
pure parallel spectrographic observations of sky regions when another
instrument is prime. The observations were completed as planned, and no
anomalies were reported.
1.4 Completed Four Sets of WF/PC-2 7909 (POMS Test Proposal: WF II
Parallel Archive Proposal)
The WF/PC-2 was used to make parallel observations as part of the
POMS test proposal. This test proposal is designed to simulate scientific
plans. The observations were completed as planned, and no problems were
reported.
1.5 Completed Four Sets of WF/PC-2 7620 (WF/PC-2 Cycle 7 Standard Darks)
The WF/PC-2 was used to make a series of Cycle 7 standard dark
calibration images. This dark calibration program obtains dark frames
every week in order to provide data for the ongoing calibration of the CCD
dark current rate, and to monitor and characterize the evolution of hot
pixels. The observations were executed as scheduled, and no anomalies were
noted.
1.6 Completed WF/PC-2 8061 (POMS Test Proposal: WF-II Backup Parallel
Archive Proposal)
This is a POMS test proposal designed to simulate scientific plans.
The proposal was executed as planned, and no anomalies were reported.
1.7 Completed NIC/2/3 8063 (NICMOS Pure Parallel Sponge - Backup)
The Near Infrared Camera (Cameras Two and Three) was used to make
observations taken in parallel with the prime science observations. This
proposal is PRE-the new FOM default. The observations were executed as
scheduled, and no anomalies were noted.
1.8 Completed Two Sets of STIS/CCD 7948 (CCD Dark and Bias Monitor --
Cont. to Dec. 98)
The Space Telescope Imaging Spectrograph (CCD) was used to measure
CCD dark current and bias rates for the two supported amplifier settings
{GAIN=1 and GAIN=4} in order to gather data for making superdarks and
superbiases. The data will be used to track the growth of hot pixels on
the CCD in general and within the various target acquisition apertures
specifically. The observations were executed as scheduled, and no
anomalies were noted.
1.9 Completed WF/PC-2 7618 (WF/PC-2 Cycle 7 Photometric Monitor UV/OPT STD)
The WF/PC-2 was used to make observations of the standard star
GRW+70D582 as part of a Cycle 7 photometric monitoring program. This
ultraviolet spectrophotometric standard star was observed in a variety of
filters and cameras to monitor the photometric stability and quantum
efficiency of WF/PC-2 from the far-ultraviolet to near-infrared. The
observations were completed as scheduled, and no problems were reported.
1.10 Completed NIC/1/2/3 7824 (Deep NIC Images of 20 High-Z Damped
Ly-Alpha Galaxies)
The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of the high-Z damped Lyman-Alpha (DLA) galaxy H150013.
The HST imaging together with ground-based spectroscopy will unify
absorption-line studies and faint galaxy imaging studies, providing a
comprehensive picture of the history of assembly, star formation, gas
consumption, and chemical enrichment in the DLA galaxies. The observations
were completed as planned, and no problems were reported.
1.11 Completed Three Sets of STIS/CCD 8062 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal Continuation)
The Space Telescope Imaging Spectrograph (CCD) was used to make high
galactic latitude observations take in parallel with the prime science
observations. The observations were completed as planned with no problems.
1.12 Completed Three Sets of STIS/CCD 8064 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal - Backup)
The Space Telescope Imaging Spectrograph (CCD) was used to conduct a
non-scripted parallel POMS test. The observations were completed as
scheduled, and no problems were reported.
1.13 Completed WF/PC-2 7282 (A Continuing Snapshot Survey for Compact
Stellar Groups and Clusters around Wolf-Rayet Stars)
The WF/PC-2 was used to make observations of the Wolf-Rayet star
WR69 as part of a continuing snapshot survey of compact stellar groups and
clusters. The newly imaged clusters allow us to accurately determine the
distances, luminosities, and ages of the WR members. The observations were
executed as scheduled, and no anomalies were noted.
1.14 Completed NIC/1/2 7218 (Nearby Starburst Galaxies)
The Near Infrared Camera (Cameras One and Two) was used to make
observations of the nearby starbursting galaxy NGC-253. This proposal
encompasses a study of both the stars and interstellar material in
starburst nuclei which will test ideas about the triggering of starbursts
and whether starbursts propagate outwards in a nucleus. The observations
were completed as planned, and no anomalies were reported.
1.15 Completed WF/PC-2 7619 (WF/PC-2 Cycle 7 Decontamination)
The WF/PC-2 was used to conduct a Cycle 7 decontamination procedure.
Ultraviolet-blocking contaminants were removed, and hot pixels cured, by
warming the CCDs to +20C for 6 hours. A variety of internal images were
taken before and after the decontamination in order to verify its success
and to monitor the instrument health. The procedures were conducted as
scheduled, and no problems were reported.
1.16 Completed WF/PC-2/STIS/CCD/NIC/1/2/3 7307 (The Formation and
Evolution of Rich Star Clusters in the LMC)
The WF/PC-2, the Space Telescope Imaging Spectrograph (CCD), and the
Near Infrared Camera (Cameras One, Two and Three) were used to make
observations of the rich star clusters which are located within the Large
Magellanic Cloud in order to study their formation and evolution. These
observations will help us understand the origin and evolution of rich star
clusters in our own galaxy. Near the beginning of this proposal, during a
ZOE, the loss of lock described in 2.1 and HSTAR 6330 occurred, temporarily
taking down the take data flag. Otherwise, the observations were completed
as scheduled, and no further anomalies were reported.
2.0 FLIGHT OPERATIONS SUMMARY:
2.1 Guide Star Acquisitions:
Scheduled Acquisitions : 8
Successful : 8
Scheduled Reacquisitions : 8
Successful : 8
Per HSTAR 6630, there was a loss of lock at 232/2244236Z that
affected the proposal described in 1.16. A new #44 command was issued and
lock was re-established.
2.2 FHST Updates:
Scheduled : 14
Successful : 14
2.3 Operations Notes:
The SSR EDAC error counter was cleared twice using ROP SR-1.
The NCC IP test was completed at 232/1803Z with overall success.
During the test a NSSC-1 status buffer dump was performed. It completed
nominally, but the first eight messages had invalid time tags. HSTAR 6629
was written. Also the PACOR-II 1.024 Mbps science dump reported errors
which have since been attributed to the PACOR-II PTB board
misconfiguration. A total of 2556 commands were transmitted during the
test.
3.0 SIGNIFICANT FORTHCOMING EVENTS:
Later this evening, from 234/0002Z until 234/0229Z, a solar eclipse
will occur. Operations personnel have ensured that Eclipse management
procedures are already in place.
Continuation of normal science observations and calibrations.
/DMH